add tests for decoding status, timestamp and xyz chunks

internal/decoders/data_tracker_status_chunk_test.go

@@ -0,0 +1,47 @@
+package decoders
+
+import (
+	"fmt"
+	"reflect"
+	"testing"
+)
+
+func TestGoodDataTrackerStatusChunk(t *testing.T) {
+
+	testCases := []struct {
+		description string
+		bytes       []byte
+		expected    DataTrackerStatusChunk
+	}{
+		{
+			description: "DataTrackerStatusChunk",
+			bytes:       []byte{3, 0, 4, 0, 0, 0, 128, 63},
+			expected: DataTrackerStatusChunk{
+				Chunk: Chunk{
+					ChunkData: []byte{0, 0, 128, 63},
+					Header:    ChunkHeader{DataLen: 4, Id: 3, HasSubchunks: false},
+				},
+				Data: DataTrackerStatusChunkData{
+					Validity: 1.0,
+				},
+			},
+		},
+	}
+
+	for _, testCase := range testCases {
+
+		actual, err := DecodeDataTrackerStatusChunk(testCase.bytes)
+
+		if err != nil {
+			t.Errorf("Test '%s' failed to decode chunk properly", testCase.description)
+			fmt.Println(err)
+		}
+
+		if !reflect.DeepEqual(actual, testCase.expected) {
+			t.Errorf("Test '%s' failed to decode chunk properly", testCase.description)
+			fmt.Printf("expected: %v\n", testCase.expected)
+			fmt.Printf("actual: %v\n", actual)
+		}
+	}
+
+}